The award-winning Web browser is better than ever.
Browse the Web with confidence - Firefox protects you from viruses,
spyware and pop-ups. Enjoy improvements to performance, ease of use
and privacy. It's easy to import your favorites and settings and get
started. Download Firefox now and get the most out of the Web.
http://www.mozilla.com/firefox/

Google Earth (PC and Mac)

Google Earth " Explore, Search and Discover . Want
to know more about a specific location? Dive right in - Google Earth
combines satellite imagery, maps and the power of Google Search to
put the world's geographic information at your fingertips. http://earth.google.com/download-earth.html

Google Desktop (PC)

Google Desktop gives you easy access to information
on your computer and from the web. It's a desktop search application
that provides full text search over your email, computer files,
music, photos, chats and web pages that you've viewed. By making your
computer searchable, Google Desktop puts your information easily
within your reach and frees you from having to manually organize your
files, emails and bookmarks. It makes searching your computer as easy
as searching the web with Google. http://desktop.google.com/

Picasa is software that helps you instantly find,
edit and share all the pictures on your PC. Every time you open
Picasa, it automatically locates all your pictures (even ones you
forgot you had) and sorts them into visual albums organised by date
with folder names you will recognise. http://picasa.google.co.uk/